[INFO] updating cached repository asampley/project-euler-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/asampley/project-euler-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/asampley/project-euler-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/asampley/project-euler-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asampley/project-euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asampley/project-euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a5cb66573e0496e2c67931d950e764ade6bc58b6
[INFO] sha for GitHub repo asampley/project-euler-rust: a5cb66573e0496e2c67931d950e764ade6bc58b6
[INFO] validating manifest of asampley/project-euler-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of asampley/project-euler-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing asampley/project-euler-rust
[INFO] finished frobbing asampley/project-euler-rust
[INFO] frobbed toml for asampley/project-euler-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust/Cargo.toml
[INFO] started frobbing asampley/project-euler-rust
[INFO] finished frobbing asampley/project-euler-rust
[INFO] frobbed toml for asampley/project-euler-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asampley/project-euler-rust/Cargo.toml
[INFO] crate asampley/project-euler-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing asampley/project-euler-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 97d86d3a74531e86fb5997b8179fd1257d577a178a20f27f21b27243a65b5d12
[INFO] running `"docker" "start" "-a" "97d86d3a74531e86fb5997b8179fd1257d577a178a20f27f21b27243a65b5d12"`
[INFO] [stderr]    Compiling project-euler-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/macros.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / macro_rules! mods {
[INFO] [stderr] 3 | |     ( $( $x:ident ),* ) => ( $(mod $x;)* );
[INFO] [stderr] 4 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_prime`
[INFO] [stderr]   --> src/numbers/prime.rs:23:2
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn is_prime(&mut self, x: u64) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "97d86d3a74531e86fb5997b8179fd1257d577a178a20f27f21b27243a65b5d12"`
[INFO] running `"docker" "rm" "-f" "97d86d3a74531e86fb5997b8179fd1257d577a178a20f27f21b27243a65b5d12"`
[INFO] [stdout] 97d86d3a74531e86fb5997b8179fd1257d577a178a20f27f21b27243a65b5d12
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] aae1cacbe2ac8945f9c9097b69279e8f879cbf6ea11acafc712ff64dc3db1427
[INFO] running `"docker" "start" "-a" "aae1cacbe2ac8945f9c9097b69279e8f879cbf6ea11acafc712ff64dc3db1427"`
[INFO] [stderr]    Compiling project-euler-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/macros.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / macro_rules! mods {
[INFO] [stderr] 3 | |     ( $( $x:ident ),* ) => ( $(mod $x;)* );
[INFO] [stderr] 4 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_prime`
[INFO] [stderr]   --> src/numbers/prime.rs:23:2
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn is_prime(&mut self, x: u64) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "aae1cacbe2ac8945f9c9097b69279e8f879cbf6ea11acafc712ff64dc3db1427"`
[INFO] running `"docker" "rm" "-f" "aae1cacbe2ac8945f9c9097b69279e8f879cbf6ea11acafc712ff64dc3db1427"`
[INFO] [stdout] aae1cacbe2ac8945f9c9097b69279e8f879cbf6ea11acafc712ff64dc3db1427
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/asampley/project-euler-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2786b0a06ba8371839418b62a80ab3ec066e51e4ae10ed7ebae561a8b29faa46
[INFO] running `"docker" "start" "-a" "2786b0a06ba8371839418b62a80ab3ec066e51e4ae10ed7ebae561a8b29faa46"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/project_euler_rust-7f0d7e7fa9384c1f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2786b0a06ba8371839418b62a80ab3ec066e51e4ae10ed7ebae561a8b29faa46"`
[INFO] running `"docker" "rm" "-f" "2786b0a06ba8371839418b62a80ab3ec066e51e4ae10ed7ebae561a8b29faa46"`
[INFO] [stdout] 2786b0a06ba8371839418b62a80ab3ec066e51e4ae10ed7ebae561a8b29faa46